Home / 1,211,400-1,817,187.52-491,395.92

Finding the Fourth Proportional to 1,211,400, 1,817,187.52 and 491,395.92

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Solution

The fourth proportional to 1,211,400, 1,817,187.52 and 491,395.92 is: 737,129.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,400 : 1,817,187.52 = 491,395.92 : x
  2. Step 2: Convert to fraction form
    1,211,400/1,817,187.52 = 491,395.92/x
  3. Step 3: Cross multiply
    1,211,400x = 1,817,187.52 × 491,395.92
  4. Step 4: Simplify right side
    1,211,400x = 892,958,533,202.92
  5. Step 5: Solve for x
    x = 892,958,533,202.92/1,211,400
  6. Step 6: Final answer
    x = 737,129.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.